{"id":94,"date":"2017-01-04T10:24:50","date_gmt":"2017-01-04T08:24:50","guid":{"rendered":"http:\/\/inceboru.interevren.com\/?page_id=94"},"modified":"2017-01-25T19:32:47","modified_gmt":"2017-01-25T17:32:47","slug":"materyal","status":"publish","type":"page","link":"http:\/\/inceboru.interevren.com\/?page_id=94","title":{"rendered":"Materyal"},"content":{"rendered":"

\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong>INTER EVREN PASLANMAZ \u00c7EL\u0130K \u00d6ZELL\u0130KLER\u0130<\/strong><\/p>\n

Paslanmaz \u00e7eliklerin en \u00f6nemli \u00f6zelli\u011fi, y\u00fcksek korozyon dayan\u0131m\u0131, y\u00fcksek s\u0131cakl\u0131klara dayan\u0131ma sahip olmalar\u0131d\u0131r. Her bir paslanmaz \u00e7elik grubunun sahip oldu\u011fu \u00f6zellikler farkl\u0131d\u0131r ve buna g\u00f6re her paslanmaz \u00e7elik grubu farkl\u0131 beklentilere cevap vermektedir.<\/p>\n

\u00c7elik, demir oran\u0131 i\u00e7erdi\u011fi elementlerin hepsinden fazla, C oran\u0131 ise % 2.06′ ya kadar olan Fe-C ala\u015f\u0131m\u0131d\u0131r. Y\u00fcksek mukavemet ve fiziksel \u00f6zelliklerinden dolay\u0131 \u00e7elik geni\u015f uygulama alan\u0131na sal\u0131iptir.<\/p>\n

\u00c7elikler kimyasal bile\u015fimlerine g\u00f6re ala\u015f\u0131ms\u0131z \u00e7elikler ve ala\u015f\u0131ml\u0131 \u00e7elikler olarak s\u0131n\u0131fland\u0131r\u0131lmaktad\u0131r. Ala\u015f\u0131ms\u0131z ve az ala\u015f\u0131ml\u0131 \u00e7elikler korozif etkilere dayan\u0131kl\u0131 de\u011fillerdir. Bile\u015fimlerinde en az %12 Cr bulunan \u00e7eliklerse; y\u00fczeylerine kuvvetle ba\u011flanan yo\u011fun, tok ve \u00e7ok ince bir oksit tabakas\u0131 nedeniyle pasifle\u015ferek korozyona dayan\u0131kl\u0131 hale gelir. Bu tip y\u00fcksek ala\u015f\u0131ml\u0131 \u00e7elikler “Paslanmaz \u00c7elikler” olarak tan\u0131mlanmaktad\u0131r. Olu\u015fan pasif tabakan\u0131n (Cr2O3 ) t\u00fcm y\u00fczeyi kaplamas\u0131 i\u00e7in \u00e7eli\u011fin Cr oran\u0131n\u0131n %8’in alt\u0131na d\u00fc\u015fmemesi gerekir.<\/p>\n

Paslanmaz \u00e7eliklerdeki ala\u015f\u0131m elementleri \u00f6nem s\u0131ras\u0131na g\u00f6re krom, nikel, molibden ve mangand\u0131r. Ayr\u0131ca az miktarda titan, bak\u0131r ve niyobyum da vard\u0131r. Krom ostenit b\u00f6lgesini daralt\u0131rken, nikel geni\u015fletir. Molibden, silisyum ve niyobyum krom gibi ostenit b\u00f6lgesini daralt\u0131r. Karbon ve mangan ise nikel gibi ostenit b\u00f6lgesini j geni\u015fletir. Krom ve nikel i\u00e7yap\u0131n\u0131n ferritik veya ostenitik olmas\u0131n\u0131 belirler. Paslanmaz \u00e7eliklerde en \u00f6nemli t ala\u015f\u0131m elementi kromdur. Kromun oksijene kar\u015f\u0131 olan afinitesi demirden fazla oldu\u011fu i\u00e7in mevcut oksijenle V kendisi birle\u015ferek pasif Cr2O3 olu\u015fturur. Ancak paslanmaz \u00e7eliklerde krom karb\u00fcr olu\u015fumu sonucunda kafes i\u00e7indeki krom oran\u0131 d\u00fc\u015fer ve dolay\u0131s\u0131yla korozyona kar\u015f\u0131 dayan\u0131m \u00f6zelli\u011fi azal\u0131r. Bu nedenle \u00e7elikte y\u00fckselen C ‘ oran\u0131 ile ya Cr oran\u0131 art\u0131r\u0131l\u0131r ya da kroma g\u00f6re karb\u00fcr yapma e\u011filimi daha fazla olan ala\u015f\u0131m elementleri \u00e7eli\u011fe ilave edilir. Krom, oksidasyona ve korozyona kar\u015f\u0131 dayan\u0131m getirmesinin yan\u0131nda \u00e7eli\u011fin y\u00fcksek s\u0131cakl\u0131klarda mekanik \u00f6zelliklerini korumas\u0131n\u0131 da sa\u011flar. Nikel paslanmaz \u00e7eliklerde red\u00fckleyici ve oksitleyici ortamlara kar\u015f\u0131 dayan\u0131m getirir ve yap\u0131n\u0131n ince taneli olmas\u0131n\u0131 sa\u011flar. Ti, Nb, Ta gibi elementler \u00f6nemli karb\u00fcr yap\u0131c\u0131lard\u0131r. Bu nedenle stabilizat\u00f6r olarak kullan\u0131l\u0131rlar. Mo \u00f6zel karb\u00fcr yap\u0131c\u0131d\u0131r ve korozyon dayan\u0131m\u0131n\u0131 art\u0131rmas\u0131 nedeniyle y\u00fcksek ala\u015f\u0131ml\u0131 krom \u00e7elikleri ve ostenitik Cr-Ni \u00e7eliklerinde s\u0131k olarak kullan\u0131l\u0131r. Mo, V, Nb gibi elementlerin,paslanmaz \u00e7eliklerin y\u00fcksek s\u0131cakl\u0131klarda mukavemet de\u011ferlerini koruma g\u00f6revi vard\u0131r . N \u00e7elik i\u00e7inde hem istenmez ve hem de ala\u015f\u0131m elementi olarak kullan\u0131l\u0131r. \u0130stenmemesinin nedeni 300-350 \u00b0C f civar\u0131nda neden oldu\u011fu mavi k\u0131r\u0131lganl\u0131k, ya\u015flanmaya hassasiyet ve ala\u015f\u0131ms\u0131z ve az ala\u015f\u0131ml\u0131 \u00e7eliklerde taneler aras\u0131 gerilme \u00e7atlaklar\u0131n\u0131n olu\u015fmas\u0131ndaki etkisidir. Ala\u015f\u0131m elementi olarak kullan\u0131lmas\u0131n\u0131n nedeni ise N ostenitik yap\u0131y\u0131 stabilize eder. Ostenitik \u00e7eliklerde dayan\u0131m ve s\u0131cakl\u0131kla akma noktas\u0131 da dahil olmak \u00fczere t\u00fcm mekanik \u00f6zellikler artmaktad\u0131r. P ve S’ de \u00e7elik i\u00e7inde istenmeyen elementlerdir. P, kat\u0131 durumda ikincil (mikro) segregasyonlar\u0131n ve ergiyi\u011fin kat\u0131la\u015fmas\u0131 esnas\u0131nda ise birincil (makro) segregasyonlar\u0131n olu\u015fmas\u0131na neden olur. Ostenitik Cr-Ni \u00e7eliklerinde P ilavesi ile akma s\u0131n\u0131r\u0131n\u0131n de\u011feri artmaktad\u0131r. S ise s\u0131cak \u00e7atlaklar\u0131n olu\u015fumunu kolayla\u015ft\u0131rmaktad\u0131r.<\/p>\n

Uygulama alan\u0131 en geni\u015f olan\u00a0 paslanmaz \u00e7elik tipleri 304,304L,316 ve 316L\u2019dir.A\u015fa\u011f\u0131da bu tiplerin \u00f6zellikleri ve uygulama alanlar\u0131 verilmi\u015ftir<\/p>\n

\"5\"<\/a><\/p>\n

 <\/p>\n\n\n\n\n\n\n\n
AISI TP<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00d6zellikleri<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Uygulama Alanlar\u0131<\/strong><\/td>\n<\/tr>\n
\u00a0 304<\/strong><\/td>\nPaslanmaz \u00e7eli\u011fin temel \u00e7e\u015fididir.450\u00b0 C’ye kadar y\u00fcksek oksidasyon mukavemeti sa\u011flar. Mekaniksel diren\u00e7 ve s\u00fcrt\u00fcnme mukavemeti \u00e7ok iyidir.<\/strong><\/td>\nKimya, petro-kimya, g\u0131da, mutfak, otomotiv, t\u0131p end\u00fcstrisinde, boyler, ve e\u015fanj\u00f6r \u00fcretiminde kullan\u0131lmaktad\u0131r.<\/strong><\/td>\n<\/tr>\n
\u00a0 304L<\/strong><\/td>\nTP 304’\u00fcn d\u00fc\u015f\u00fck karbonlu versiyonudur.500 C’nin \u00fczerindeki s\u0131cakl\u0131klarda s\u00fcrt\u00fcnme mukavemeti yoktur. 450\u00b0 C’ye kadar y\u00fcksek oksidasyon mukavemeti vard\u0131r.<\/strong><\/td>\nKimya, maden, petrol end\u00fcstrisinde ve kimyasal depolama tanklar\u0131nda kullan\u0131lmaktad\u0131r. Genellikle 400\u00b0 C’nin alt\u0131ndaki s\u0131cakl\u0131klarda kullan\u0131l\u0131r.<\/strong><\/td>\n<\/tr>\n
\u00a0 316<\/strong><\/td>\n650\u00b0 C’ye kadar y\u00fcksek oksidasyon mukavemeti sa\u011flar, mekaniksel kopma ve b\u00fcz\u00fclme mukavemeti, ayr\u0131ca b\u00fcnyesinde bulunan molibden nedeniyle y\u00fcksek oksidasyon mukavemeti sa\u011flar.<\/strong><\/td>\nKimya, petro-kimya, g\u0131da, tekstil, ka\u011f\u0131t end\u00fcstrisinde, deniz ve end\u00fcstriyel atmosfer \u015fartlar\u0131nda kullan\u0131lmaktad\u0131r.<\/strong><\/td>\n<\/tr>\n
\u00a0 316L<\/strong><\/td>\nTP 316’n\u0131n d\u00fc\u015f\u00fck karbonlu versiyonudur. 500\u00b0 C’nin \u00fczerindeki s\u0131cakl\u0131klarda s\u00fcrt\u00fcnme mukavemeti yoktur.450\u00b0 C’ye kadar y\u00fcksek oksidasyon mukavemeti mevcuttur<\/strong><\/td>\nKimya, petro-kimya, g\u0131da, tekstil, ka\u011f\u0131t end\u00fcstrisinde, deniz ve end\u00fcstriyel atmosfer \u015fartlar\u0131nda kullan\u0131lmaktad\u0131r. Genellikle 400\u00b0 C’nin alt\u0131ndaki s\u0131cakl\u0131klarda kullan\u0131l\u0131r.<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

\"3\"<\/a><\/p>\n

 <\/p>\n

INTER EVREN<\/strong>\u2019\u0130N tedarik etti\u011fi k\u00fc\u00e7\u00fck \u00e7apl\u0131 borular genel olarak bu d\u00f6rt tip \u00e7elikten imal edilmi\u015f olmakla beraber,\u00f6zel istek \u00fczerine di\u011fer tip \u00e7eliklerin kullan\u0131ld\u0131\u011f\u0131 borular da tedarik edilerek m\u00fc\u015fterilerimize sunulabilmektedir;A\u015fa\u011f\u0131da,borular\u0131m\u0131z\u0131n \u00fcretiminde kullan\u0131lan \u00e7eli\u011fin kimyasal kompozisyonu g\u00f6sterilmektedir;<\/p>\n

\u00a0\"2\"<\/a><\/strong><\/p>\n

\u00a0<\/strong>Kimyasal Kompozisyon<\/strong><\/p>\n\n\n\n\n\n\n\n
Type<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0 C<\/strong><\/td>\n\u00a0\u00a0\u00a0 Si<\/strong><\/td>\n\u00a0\u00a0\u00a0 Mn<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0 P<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0 S<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0 Cr<\/strong><\/td>\n\u00a0\u00a0\u00a0\u00a0\u00a0 Ni<\/strong><\/td>\n\u00a0\u00a0\u00a0 Mo<\/strong><\/td>\n<\/tr>\n
304<\/strong><\/td>\n\u00a0 0,08<\/td>\n\u00a0 0,75<\/td>\n\u00a0\u00a0 2,00<\/td>\n\u00a0 0,040<\/td>\n\u00a0 0,030<\/td>\n\u00a018-20<\/td>\n\u00a0 8-11<\/td>\n\u00a0\u00a0\u00a0\u00a0 –<\/td>\n<\/tr>\n
304L<\/strong><\/td>\n\u00a0 0,03<\/td>\n\u00a0 0,75<\/td>\n\u00a0\u00a0 2,00<\/td>\n\u00a0 0,040<\/td>\n\u00a0 0,030<\/td>\n\u00a018-20<\/td>\n\u00a0 8-12<\/td>\n\u00a0\u00a0\u00a0\u00a0 –<\/td>\n<\/tr>\n
316<\/strong><\/td>\n\u00a0 0,08<\/td>\n\u00a0 0,75<\/td>\n\u00a0\u00a0 2,00<\/td>\n\u00a0 0,040<\/td>\n\u00a0 0,030<\/td>\n\u00a016-18<\/td>\n\u00a010-14<\/td>\n\u00a0\u00a0 2-3<\/td>\n<\/tr>\n
316L<\/strong><\/td>\n\u00a0 0,03<\/td>\n\u00a0 0,75<\/td>\n\u00a0\u00a0 2,00<\/td>\n\u00a0 0,040<\/td>\n\u00a0 0,030<\/td>\n\u00a016-18<\/td>\n\u00a010-14<\/td>\n\u00a0\u00a0 2-3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

ASTM A249,A269,A632,A908<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0INTER EVREN PASLANMAZ \u00c7EL\u0130K \u00d6ZELL\u0130KLER\u0130 Paslanmaz \u00e7eliklerin en \u00f6nemli \u00f6zelli\u011fi, y\u00fcksek korozyon dayan\u0131m\u0131, y\u00fcksek s\u0131cakl\u0131klara dayan\u0131ma sahip olmalar\u0131d\u0131r. Her bir paslanmaz \u00e7elik grubunun sahip oldu\u011fu \u00f6zellikler farkl\u0131d\u0131r ve buna … <\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-94","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=\/wp\/v2\/pages\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=94"}],"version-history":[{"count":4,"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=\/wp\/v2\/pages\/94\/revisions"}],"predecessor-version":[{"id":153,"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=\/wp\/v2\/pages\/94\/revisions\/153"}],"wp:attachment":[{"href":"http:\/\/inceboru.interevren.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}